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Xiao Bian summarized the talc reserves and characteristics of the above five regions as follows:
First, Liaoning talc - pink block, high whiteness
Liaoning talc proven reserves of 45.69 million tons, accounting for 18.3% of the country's total reserves. Mainly distributed in Haicheng, Benxi, Dashiqiao, Huanren, Xiuyan, Kuandian, Fengcheng and other cities and counties. In addition to Benxi Lianshanguan mining area In addition, all other mining areas are carbonate-type talc deposits, and the ore-forming parent rock is magnesite, which is formed by metamorphism of the heat metamorphic area. The ore bodies are mostly in the form of lentils and lens bodies of different sizes. The ore is in pink, White, grayish white, blue-gray talc is the main component, followed by flaky talc. The talc mineral is a fine-grained scale aggregate, which can be enriched into pure talc, or with a small amount of associated minerals such as magnesite, quartz, dolomite, Apatite composed of apatite. The pink and white pure talc is pure and smooth, and the whiteness is as high as 95 degrees. The Benxi Lianshanguan talc is a kind of oblique chlorite deposit, which is usually small at the edge of the ore body. The talc mineral lens forms a chlorite-talc deposit called chlorite talc, the so-called "grey green talc".
Second, Shandong talc - white, smoke color block, high whiteness
The proven reserves of talc in Shandong are 44.43 million tons, accounting for 17.8% of the total national reserves. It is mainly distributed in Pingdu, Laizhou, Qixia and other cities and counties, all of which are carbonate-type talc deposits. The ore-forming parent rocks are magnesite and marble. It is metamorphosed by hydrothermal metasomatism. The ore body is layered and lenticular. The ore is mainly white, grayish white, light green, grayish green talc, followed by flaky talc, partly powdered talc and black talc. Compact and delicate white, off-white pure talc.
Third, Guangxi talc - gray, light green soft talc
Guangxi talc proven reserves of 31.87 million tons, accounting for 12.8% of the country's total reserves, mainly distributed in Longsheng, Shanglin, Huanjiang and other counties. Longsheng talc is carbonate rock soft talc, ore-forming parent rock is dolomite Dali The rock is formed by the hydrothermal metamorphism after the magma period. The ore body is thick and layered, lenticular, and spaced. The ore is mainly grayish, light green, grayish green, and flaky soft talc, followed by "gray green". Talc: "The composition of the material is mainly talc, and some contain a small amount of oblique chlorite, slanting stone, quartz, pyrite.
Fourth, Jiangxi talc - sedimentary clay type black talc
The proven reserves of Jiangxi talc are 74.02 million tons, accounting for 29.6% of the total talc reserves. The main distribution is in Du, Guangfeng, Gao'an and other places. It is a high-magnesium sedimentary clay diagenetic black talc deposit with stable horizon and distribution range. The shape of the ore body is layered, layered, lenticular, and appears in groups. The ore is gray, purple-gray, black, earthy, and slippery. The mineral composition is mainly talc, and the associated minerals are mostly calcite and quartz. , sepiolite, montmorillonite, organic carbon, etc., low whiteness. After roasting, it can fade to whiteness of 70-85 degrees.
5. Qinghai talc - symbiotic talc mine
Qinghai talc reserves are 41.17 million tons, accounting for 16.4% of the country's total reserves, mainly including two deposits, one is the large-scale fiber serpentine asbestos-talc symbiotic deposit, and the other is Qilian small talc-magmite symbiosis Mineral deposits. Currently developed and utilized to a lesser extent.
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